Description

2-Nitrotoluene-4-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in organic synthesis. Its value lies in its ability to introduce both nitro and sulfonic acid functional groups, which are crucial for creating dyes, pigments, and other specialty chemicals. This compound is essential for manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries seeking reliable, high-purity building blocks for their production processes.

Application

• Primary intermediate in the synthesis of azo dyes and pigments.
• Key building block for pharmaceutical active ingredients and agrochemicals.
• Used in the production of optical brighteners and fluorescent whitening agents.
• Intermediate for corrosion inhibitors and specialty surfactants.
• Starting material for research and development in organic chemistry.
• Precursor in the manufacture of liquid crystal materials.

Basic Information

Product Name	2-Nitrotoluene-4-Sulfonic Acid
CAS No.	97-06-3
Molecular Formula	C7H7NO5S
Molecular Weight	217.20 g/mol
Synonyms	4-Methyl-3-nitrobenzenesulfonic Acid; 2-Nitro-p-toluenesulfonic Acid; 3-Nitro-4-methylbenzenesulfonic Acid; 4-Methyl-3-nitrobenzenesulfonate; 2-Nitrotoluene-4-sulfonate; 3-Nitro-4-toluenesulfonic Acid; 2-Nitro-4-methylbenzenesulfonic Acid; NTSA
EINECS	202-560-9

Quality Control

Our 2-Nitrotoluene-4-Sulfonic Acid is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing the results of tests including assay, moisture content, and heavy metals. We are committed to consistent quality and supply chain reliability for our global B2B partners.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong bases and reducing agents.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.